Interlocked fastener.



"No.791,4o5. I @ATENTED MAY30,1905.

- 0.1).0RANDAL.

INTERLOGKBD .FASTENBR'. APPLICATION FILED JAN. 9, 1905.

UNITEDV- STAT -s RATENT Patented May so, 1905. 2

OFFICE.-

CHAUNCEY D. ORA-NDAL, "OF HALF TO WILLIAM M.

INTERLO GKED' FASTEN ER- SIPEGIIiI CAflICIJtI forming part of Letters Patent No. 791,405, dated May 30, 1905..

Application filed January 9.1905. Serial No. 240,303.

To (ZZZ it may concern..- v Be it known that I, GHAUNcnY D. CR NDAL, a citizen of the United States, and a resident of 'St.'Lou1s, in the State of Missouri, have in vented certain new and useful Improvements in Interlocked Fasteners, of which the following is a specification containing a full, clear, and exact description, reference being bad to p the accompanying drawings, forming a .part hereof.

My invention relates toimprovements in interlocked fasteners; and it consists of the novel features herein shown, described, and claimed. In the drawings, Figure 1 is aplan of the I5 "interlocked fastener before itis bentinto form for use. Fig. 2 isa side elevation showing my improved interlocked fastener in use, parts beln'g broken away to economlze space and the view being taken from the outside. Fig.

I 3 1s a' sectional detail upon the line 3 3 of Fig.

2 and looking-in the direction indicated by the arrow.'-z Figs. 4, 5, 6, 7, 8, and 9 are views analogous to-.Fig. 3 and illustrating some of the diflerentways-in whieh the interlocked 5 fastener may be applied.

.The blank from wvhich the interlocked fastener is formed is punched from sheet metal and cdmprises the central portion 10; the return portions 11 and 12', extendifigfrom op- 3 posite sides of the central portions; the spac ing portions 13 and 14, extending fronithe portions 11 and 12, and the interlockingteeth and 16. extending from the spacing por-.- lJIODS SItId teeth being staggered, so that the teeth of the one side will pass between the teeth of the other side.

The-fastener is bent so that thereturn portions 11 "and 12 are against the. inner-face of the central portion 10, and the-spacing por- 4 tions'13jand 14 extend inwardly side by side from the inner edges of' the .return portions, 1 and the teeth are crossed over, so as to lock the spacing portions together. The fastener is applied by placing the return portions between the edges of the boards 17 and 18 with the central portion 10 outwardly andlthen driving the points of theteeth 15 and 16 into the inner faces ofthegboards 17 and 18. The

- center portion 10 presents a finished appear-v a'nce and covers the joint between the two boards.

In Fig. 2 the fastener is applied to veneered material. In the other figures it is applied to solid boards; butit is neered material and boards are interchangeitble. In Fig. 2 the boards-are in a straight me. In Fig. 4 the boards are at right angles, and the edges of the central portion 10 and the corresponding portions of the return portions are bent inwardly at right angles to form the beads 19 and 20, the bead 19 extending around the corner of the part 17 and the bead 20 extending into the groove 21 in the board 18.

In Fig. 6 the boards are beveled, and the fastener applied, so that the finished outer surface 10 is half-way between faces ofthe boards, and the beads 19 and 20 extend into the grooves 22 and 23 in the boards. f I

In Fig. 5 the boards are mitered, and the central portion 10 of ter to form an angle-bar, so as to present the appearance of a square metallic corner.

In Fig. 9 the boards are curved to make a round corner. I

In Fig. 7 the boards are mitered and grooves 24 and 25 are formed at right angles to the mitered faoes'and the fastener is applied byplaci'ng the central portion in these 'grooves and bending the teeth around the .corner, so as to present the teeth upon the outer surfaces of th'e'boards.

driven into the inn'erfaces of the boards, thus hiding thefastener from the, outside.

obvious that the ve-.

the outer surthe fastener is bent at its cen- In Fig. 8 the teeth extend inwardly and are I In Fig. 4 nails 26' are inserted through the spacing portions to secure the fastener to one of the boards before it is applied to the other I I boards.

Openings 27 are formed through the teeth 15 and 16, so that small nails or screws glnay to assist the points of the teeth in be in'serte holding the fastener in posit'ion. V

In applying the blankthe spacing portions 11* and thickness of the materialto be joined.

9'5" 12 are designed with reference to the This interlocked fastener was planned primarily for the purpose of securing pieces of material together in constructing coflins and caskets, as shown and described in my com panion application for coffins and caskets, filed July 1, 1904, Serial No. 214,862, and it is obvious that the interlocked fastener may be used in constructing plugless vehicle-bodies in cabinet-work and in various other classes of work without departing from the spirit of my invention.

I claim 1. In an interlocked fastener: a central portion; return portions extending inwardly from the edges of the central portion; spacing portions extending from the return portions; and teeth extending from the spacing portions; said teeth being staggered and interlocked; substantially as specified.

2. 'Inan interlocked fastener: a central portion; return portions extending inwardly from the edges of the central portion; spacing portions extending from the return portions; teeth extending from the spacing portions; said teeth being staggered and interlocked; and there being openings through the teeth to receive nails or the like.

3. In an interlocked fastener: acentral portion; return portions extending from the 0pposite sides of the central portion; there being beads at the junctions of the return portions with the central portion; spacing portions extending from the return portions; interlocking teeth extending from the spacing portions.

4. In an interlocked fastener: acentral portion; return portions extending from the opposite sides of the central portion; there being beads at the junctions of the return portions with the central portion; spacing portions extending from the return porti'ons; interlocking teeth extending from the spacing portions; and there being openings through {like spacing portions to receive nails or the 5. In an interlocked fastener: acentral portion; return portions extending inwardly from the edges of thecentral portion; spacing portions extending from the return portions; teeth. extending from the spacing portions; said teeth being staggered and interlocked; there being openings through the teeth to receive nails or the like; and there being openings through the spacing'portions to receive nails or the like.

6. In an interlocked fastener: a central portion; return portions extending inwardly from the edges'of the central portion; spacing portions extending from the return portions; teeth extending from the spacing portions; said teeth being staggered and interlocked; there being openings through the teeth to receive nails or the like; and there being openings through the spacing portions to receive nails and the like? In testimony whereof I have signed my name to this specification in presence of two subscribing witnesses.

CHAUNCEY D. CRANDAL. 

